[38] Some P-47 pilots claimed to have damaged the sound barrier in steep dives, but later exploration revealed that as a result of tension buildup Within the pitot tube at superior speeds, airspeed readings became unpredictably exaggerated. As P-47s had been ready to out-dive enemy fighter planes trying to escape https://www.murakamilab.tuis.ac.jp/wiki/index.php?sinkselect17